222031130221 has 4 divisors (see below), whose sum is σ = 233716979200. Its totient is φ = 210345281244.

The previous prime is 222031130149. The next prime is 222031130227. The reversal of 222031130221 is 122031130222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 222031130221 - 2⁷ = 222031130093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 11685848959 = 222031130221 / (2 + 2 + 2 + 0 + 3 + 1 + 1 + 3 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222031130227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5842924461 + ... + 5842924498.

It is an arithmetic number, because the mean of its divisors is an integer number (58429244800).

Almost surely, 2^222031130221 is an apocalyptic number.

It is an amenable number.

222031130221 is a deficient number, since it is larger than the sum of its proper divisors (11685848979).

222031130221 is a wasteful number, since it uses less digits than its factorization.

222031130221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11685848978.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 222031130221 its reverse (122031130222), we get a palindrome (344062260443).

Subtracting from 222031130221 its reverse (122031130222), we obtain a palindrome (99999999999).

The spelling of 222031130221 in words is "two hundred twenty-two billion, thirty-one million, one hundred thirty thousand, two hundred twenty-one".